Conform acestui dicționar de sedimentologie:

banc arcuit (sedim.) (engl.= point-bar), forma acumulativa in albiile minore (canale) ale raurilor meandrate. Sedimentele unui b.a. repauzeaza peste aluviunile bazale din canal; grosimea lor este direct proportionala cu adancimea canalului.
https://www.rasfoiesc.com/educatie/geografie/geologie/DICTIO...

Traducerea e confirmată aici:

in albia minora: aluviuni bazale (channel floor, lag deposit), bare axiale, transversale (bars), renii sau bancuri arcuite (point bar), bare de inundatie (chute bar), canale colmatate si parasite (fill channel);
https://www.scrigroup.com/geografie/SISTEME-DEPOZITIONALE-CO...

Altă definiție cu aceeași traducere:

Renie Sin. Scruntar, Banc arcuit Mică plajă nisipoasă sau pietroasă, care se formează pe malul convex al râurilor sinuoase (meandrate).
[scroll, meander scroll, point bar deposits, side ~]
https://moodle.usm.md/pluginfile.php/614614/mod_resource/con...

Definiție în engleză:

A point bar is a depositional feature made of alluvium that accumulates on the inside bend of streams and rivers below the slip-off slope. Point bars are found in abundance in mature or meandering streams. They are crescent-shaped and located on the inside of a stream bend, being very similar to, though often smaller than, towheads, or river islands.
https://en.wikipedia.org/wiki/Point_bar

Imagine:
https://waterandlandforms.weebly.com/cut-bank-and-point-bar....

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Note added at 1 hr (2023-08-17 20:14:25 GMT)
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point bar [Geology]

An arcuate deposit of sediment, usually sand, that occurs along the convex inner edges of the meanders of channels and builds outward as the stream channel migrates.
https://glossary.slb.com/en/terms/p/point_bar